diff --git a/src/ErrorFunction/ErrorFunctions.cpp b/src/ErrorFunction/ErrorFunctions.cpp
index e91bc5e72220eb6e907c9c64686fdb70475d2997..a0764cf30d8af41707cc61c316ba95f97328e863 100644
--- a/src/ErrorFunction/ErrorFunctions.cpp
+++ b/src/ErrorFunction/ErrorFunctions.cpp
@@ -113,9 +113,9 @@ namespace lib4neuro {
         //TODO instead use something smarter
         std::vector<double> output(dim_out);
 
-        COUT_DEBUG(
-                "Evaluation of the error function MSE on the given data-set (format 'data-set element index' 'input' 'real output' 'predicted output'):"
-                        << std::endl);
+        COUT_DEBUG("Evaluation of the error function MSE on the given data-set (format 'data-set element index' 'input'"
+                   " 'real output' 'predicted output'):"
+                   << std::endl);
 
         *results_file_path << "[Data-set element index] [Input] [Real output] [Predicted output]" << std::endl;